Do tumors typically begin on one leg or both legs
Tumours can begin in one leg also
There is no specific location for occurrence of tumor.
It can occur in one leg or in two legs simultaneously.
Can you be more specific about the lesion/tumour that you are talking.
.There are many benign and malignant lesions that can occur.
Hope I answered your query.If you have any questions,I will clarify further.
Wish you good health